| Date | November 2012 | Marks available | 1 | Reference code | 12N.1.HL.TZ0.18 |
| Level | Higher level | Paper | Paper 1 | Time zone | TZ0 |
| Command term | Question number | 18 | Adapted from | N/A |
Question
What is the direction of flow of oxygenated blood during a heartbeat?
A. left atrium → semilunar/aortic valve → left ventricle → pulmonary vein
B. pulmonary vein → left atrium → left ventricle → semilunar/aortic valve
C. left atrium → left ventricle → semilunar/aortic valve → pulmonary vein
D. pulmonary vein → left atrium → semilunar/aortic valve → left ventricle
Markscheme
B
Examiners report
N/A
Syllabus sections
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